stuff
This commit is contained in:
John Cupitt
parent
f52d195e77
commit
b112b828c9
12
TODO
12
TODO
@ -1,5 +1,17 @@
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- update the Portfiles on the mac and on the website from the macports ones
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- im_render should use a hash for tile lookup ... or+shift x/y together
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- eval callbacks shouldn't set an errormsg? or maybe it should for debugging
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and stuff
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- bilinear should be a true subclass of interpolate ... and put the tables
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into the base class
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- add 'name' to vipsobbject, and vips_object_print() ... handy for debugging
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make 'print' into a virtual method so subclasses can add stuff if they want
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WONTFIX for 7.16
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================
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@ -65,17 +65,114 @@ typedef struct _VipsInterpolateClass {
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void (*interpolate)( VipsInterpolate *, REGION *out, REGION *in,
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int out_x, int out_y, double in_x, double in_y );
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/* This interpolator needs a window of pixels this big.
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/* This interpolator needs a window this many pixels across and down.
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*/
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int window;
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int (*get_window_size)( VipsInterpolate * );
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/* Or just set this if you want constant.
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*/
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int window_size;
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} VipsInterpolateClass;
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VipsInterpolate *vips_interpolate_bilinear_new( void );
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GType vips_interpolate_get_type( void );
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void vips_interpolate( VipsInterpolate *interpolate, REGION *out, REGION *in,
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int out_x, int out_y, double in_x, double in_y );
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int vips_interpolate_get_window_size( VipsInterpolate *interpolate );
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/* Convenience: return a static bilinear, so no need to free it.
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/* Nearest class starts.
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*/
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#define VIPS_TYPE_INTERPOLATE_NEAREST (vips_interpolate_nearest_get_type())
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#define VIPS_INTERPOLATE_NEAREST( obj ) \
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(G_TYPE_CHECK_INSTANCE_CAST( (obj), \
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VIPS_TYPE_INTERPOLATE_NEAREST, VipsInterpolateNearest ))
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#define VIPS_INTERPOLATE_NEAREST_CLASS( klass ) \
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(G_TYPE_CHECK_CLASS_CAST( (klass), \
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VIPS_TYPE_INTERPOLATE_NEAREST, VipsInterpolateNearestClass))
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#define VIPS_IS_INTERPOLATE_NEAREST( obj ) \
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(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_INTERPOLATE_NEAREST ))
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#define VIPS_IS_INTERPOLATE_NEAREST_CLASS( klass ) \
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(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_INTERPOLATE_NEAREST ))
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#define VIPS_INTERPOLATE_NEAREST_GET_CLASS( obj ) \
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(G_TYPE_INSTANCE_GET_CLASS( (obj), \
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VIPS_TYPE_INTERPOLATE_NEAREST, VipsInterpolateNearestClass ))
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typedef struct _VipsInterpolateNearest {
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VipsObject parent_object;
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} VipsInterpolateNearest;
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typedef struct _VipsInterpolateNearestClass {
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VipsObjectClass parent_class;
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} VipsInterpolateNearestClass;
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VipsInterpolateNearest *vips_interpolate_nearest_new( void );
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GType vips_interpolate_nearest_get_type( void );
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/* Convenience: return a static fast nearest, so no need to free it.
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*/
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VipsInterpolate *vips_interpolate_nearest_static( void );
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/* Bilinear class starts.
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*/
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/* How many bits of precision we keep for transformations, ie. how many
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* pre-computed matricies we have.
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*/
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#define VIPS_TRANSFORM_SHIFT (5)
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#define VIPS_TRANSFORM_SCALE (1 << VIPS_TRANSFORM_SHIFT)
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/* How many bits of precision we keep for interpolation, ie. where the decimal
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* is in the fixed-point tables.
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*/
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#define VIPS_INTERPOLATE_SHIFT (13)
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#define VIPS_INTERPOLATE_SCALE (1 << VIPS_INTERPOLATE_SHIFT)
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#define VIPS_TYPE_INTERPOLATE_BILINEAR (vips_interpolate_bilinear_get_type())
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#define VIPS_INTERPOLATE_BILINEAR( obj ) \
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(G_TYPE_CHECK_INSTANCE_CAST( (obj), \
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VIPS_TYPE_INTERPOLATE_BILINEAR, VipsInterpolateBilinear ))
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#define VIPS_INTERPOLATE_BILINEAR_CLASS( klass ) \
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(G_TYPE_CHECK_CLASS_CAST( (klass), \
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VIPS_TYPE_INTERPOLATE_BILINEAR, VipsInterpolateBilinearClass))
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#define VIPS_IS_INTERPOLATE_BILINEAR( obj ) \
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(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_INTERPOLATE_BILINEAR ))
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#define VIPS_IS_INTERPOLATE_BILINEAR_CLASS( klass ) \
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(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_INTERPOLATE_BILINEAR ))
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#define VIPS_INTERPOLATE_BILINEAR_GET_CLASS( obj ) \
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(G_TYPE_INSTANCE_GET_CLASS( (obj), \
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VIPS_TYPE_INTERPOLATE_BILINEAR, VipsInterpolateBilinearClass ))
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typedef struct _VipsInterpolateBilinear {
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VipsObject parent_object;
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/* Set this to not use tables ...slightly more accurate.
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*/
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gboolean slow;
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} VipsInterpolateBilinear;
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typedef struct _VipsInterpolateBilinearClass {
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VipsObjectClass parent_class;
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/* Precalculated interpolation matricies. int (used for pel sizes up
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* to short), and double (for all others). We go to scale + 1, so
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* we can round-to-nearest safely.
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*/
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int matrix_int[VIPS_TRANSFORM_SCALE + 1][2];
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double matrix_double[VIPS_TRANSFORM_SCALE + 1][2];
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} VipsInterpolateBilinearClass;
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GType vips_interpolate_bilinear_get_type( void );
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void vips_interpolate_bilinear_set_slow( VipsInterpolateBilinear *, gboolean );
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VipsInterpolateBilinear *vips_interpolate_bilinear_new( void );
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/* Convenience: return a static fast bilinear, so no need to free it.
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*/
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VipsInterpolate *vips_interpolate_bilinear_static( void );
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/* Yafr class starts.
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*/
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VipsInterpolate *vips_interpolate_bilinear();
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#define VIPS_TYPE_INTERPOLATE_YAFR (vips_interpolate_yafr_get_type())
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#define VIPS_INTERPOLATE_YAFR( obj ) \
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@ -183,9 +183,9 @@ vips_object_init( VipsObject *vips_object )
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GType
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vips_object_get_type( void )
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{
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static GType vips_object_type = 0;
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static GType type = 0;
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if( !vips_object_type ) {
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if( !type ) {
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static const GTypeInfo info = {
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sizeof( VipsObjectClass ),
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NULL, /* base_init */
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@ -198,11 +198,11 @@ vips_object_get_type( void )
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(GInstanceInitFunc) vips_object_init,
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};
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vips_object_type = g_type_register_static( G_TYPE_OBJECT,
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type = g_type_register_static( G_TYPE_OBJECT,
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"VipsObject", &info, 0 );
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}
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return( vips_object_type );
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return( type );
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}
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void
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@ -1,4 +1,4 @@
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/* im_interpolate ... abstract base class for various interpolators
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/* vipsinterpolate ... abstract base class for various interpolators
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*
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* J. Cupitt, 15/10/08
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*/
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@ -47,4 +47,541 @@
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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/* "fast" floor() ... on my laptop, anyway.
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*/
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#define FLOOR( V ) ((V) >= 0 ? (int)(V) : (int)((V) - 1))
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static VipsObjectClass *vips_interpolate_parent_class = NULL;
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static VipsObjectClass *vips_interpolate_nearest_parent_class = NULL;
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static VipsObjectClass *vips_interpolate_bilinear_parent_class = NULL;
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#ifdef DEBUG
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static void
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vips_interpolate_finalize( GObject *gobject )
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{
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printf( "vips_interpolate_finalize: " );
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vips_object_print( VIPS_OBJECT( gobject ) );
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G_OBJECT_CLASS( vips_interpolate_parent_class )->finalize( gobject );
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}
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#endif /*DEBUG*/
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static int
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vips_interpolate_real_get_window_size( VipsInterpolate *interpolate )
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{
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VipsInterpolateClass *class = VIPS_INTERPOLATE_GET_CLASS( interpolate );
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g_assert( class->window_size != -1 );
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return( class->window_size );
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}
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static void
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vips_interpolate_class_init( VipsInterpolateClass *class )
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{
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#ifdef DEBUG
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GObjectClass *gobject_class = G_OBJECT_CLASS( class );
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#endif /*DEBUG*/
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vips_interpolate_parent_class = g_type_class_peek_parent( class );
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#ifdef DEBUG
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gobject_class->finalize = vips_interpolate_finalize;
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#endif /*DEBUG*/
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class->interpolate = NULL;
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class->get_window_size = vips_interpolate_real_get_window_size;
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class->window_size = -1;
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}
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static void
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vips_interpolate_init( VipsInterpolate *interpolate )
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{
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#ifdef DEBUG
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printf( "vips_interpolate_init: " );
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vips_object_print( VIPS_OBJECT( interpolate ) );
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#endif /*DEBUG*/
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}
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GType
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vips_interpolate_get_type( void )
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{
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static GType type = 0;
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if( !type ) {
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static const GTypeInfo info = {
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sizeof( VipsObjectClass ),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) vips_interpolate_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof( VipsObject ),
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32, /* n_preallocs */
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(GInstanceInitFunc) vips_interpolate_init,
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};
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type = g_type_register_static( VIPS_TYPE_OBJECT,
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"VipsInterpolate", &info, 0 );
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}
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return( type );
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}
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/* Set the point out_x, out_y in REGION out to be the point interpolated at
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* in_x, in_y in REGION in. Don't do this as a signal ffor speed.
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*/
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void
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vips_interpolate( VipsInterpolate *interpolate, REGION *out, REGION *in,
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int out_x, int out_y, double in_x, double in_y )
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{
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VipsInterpolateClass *class = VIPS_INTERPOLATE_GET_CLASS( interpolate );
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g_assert( class->interpolate );
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class->interpolate( interpolate, out, in, out_x, out_y, in_x, in_y );
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}
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/* Get this interpolator's required window size.
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*/
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int
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vips_interpolate_get_window_size( VipsInterpolate *interpolate )
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{
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VipsInterpolateClass *class = VIPS_INTERPOLATE_GET_CLASS( interpolate );
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g_assert( class->get_window_size );
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return( class->get_window_size( interpolate ) );
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}
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/* VipsInterpolateNearest class
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*/
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#ifdef DEBUG
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static void
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vips_interpolate_nearest_finalize( GObject *gobject )
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{
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printf( "vips_interpolate_nearest_finalize: " );
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vips_object_print( VIPS_OBJECT( gobject ) );
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G_OBJECT_CLASS( vips_interpolate_nearest_parent_class )->
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finalize( gobject );
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}
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#endif /*DEBUG*/
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static void
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vips_interpolate_nearest_interpolate( VipsInterpolate *interpolate,
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REGION *out, REGION *in,
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int out_x, int out_y, double in_x, double in_y )
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{
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/* Pel size and line size.
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*/
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const int ps = IM_IMAGE_SIZEOF_PEL( in->im );
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int z;
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PEL *q = (PEL *) IM_REGION_ADDR( out, out_x, out_y );
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/* Subtract 0.5 to centre the nearest.
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*/
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const double cx = in_x - 0.5;
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const double cy = in_y - 0.5;
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/* Top left corner we interpolate from.
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*/
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const int xi = FLOOR( cx );
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const int yi = FLOOR( cy );
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const PEL *p = (PEL *) IM_REGION_ADDR( in, xi, yi );
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for( z = 0; z < ps; z++ )
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q[z] = p[z];
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}
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static void
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vips_interpolate_nearest_class_init( VipsInterpolateNearestClass *class )
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{
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#ifdef DEBUG
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GObjectClass *gobject_class = G_OBJECT_CLASS( class );
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#endif /*DEBUG*/
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VipsInterpolateClass *interpolate_class =
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VIPS_INTERPOLATE_CLASS( class );
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vips_interpolate_nearest_parent_class =
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g_type_class_peek_parent( class );
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#ifdef DEBUG
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gobject_class->finalize = vips_interpolate_nearest_finalize;
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#endif /*DEBUG*/
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interpolate_class->interpolate = vips_interpolate_nearest_interpolate;
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interpolate_class->window_size = 1;
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}
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static void
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vips_interpolate_nearest_init( VipsInterpolateNearest *nearest )
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{
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#ifdef DEBUG
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printf( "vips_interpolate_nearest_init: " );
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vips_object_print( VIPS_OBJECT( nearest ) );
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#endif /*DEBUG*/
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}
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GType
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vips_interpolate_nearest_get_type( void )
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{
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static GType type = 0;
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if( !type ) {
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static const GTypeInfo info = {
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sizeof( VipsObjectClass ),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) vips_interpolate_nearest_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof( VipsObject ),
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32, /* n_preallocs */
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(GInstanceInitFunc) vips_interpolate_nearest_init,
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};
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type = g_type_register_static( VIPS_TYPE_INTERPOLATE,
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"VipsInterpolateNearest", &info, 0 );
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}
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return( type );
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}
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VipsInterpolateNearest *
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vips_interpolate_nearest_new( void )
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{
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return( g_object_new( VIPS_TYPE_INTERPOLATE_NEAREST, NULL ) );
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}
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/* Convenience: return a static nearest you don't need to free.
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*/
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VipsInterpolate *
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vips_interpolate_nearest_static( void )
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{
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static VipsInterpolate *interpolate = NULL;
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if( !interpolate )
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interpolate =
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VIPS_INTERPOLATE( vips_interpolate_nearest_new() );
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return( interpolate );
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}
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/* VipsInterpolateBilinear class
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*/
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#ifdef DEBUG
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static void
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vips_interpolate_bilinear_finalize( GObject *gobject )
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{
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printf( "vips_interpolate_bilinear_finalize: " );
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vips_object_print( VIPS_OBJECT( gobject ) );
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G_OBJECT_CLASS( vips_interpolate_bilinear_parent_class )->
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finalize( gobject );
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}
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#endif /*DEBUG*/
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/* Interpolate a section ... int8/16 types.
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*/
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#define BILINEAR_INT( TYPE ) { \
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TYPE *tq = (TYPE *) q; \
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\
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const int m1 = class->matrix_int[xi][0]; \
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const int m2 = class->matrix_int[xi][1]; \
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const int m3 = class->matrix_int[yi][0]; \
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const int m4 = class->matrix_int[yi][1]; \
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\
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const int c1 = (m3 * m1) >> VIPS_INTERPOLATE_SHIFT; \
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const int c2 = (m3 * m2) >> VIPS_INTERPOLATE_SHIFT; \
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const int c3 = (m4 * m1) >> VIPS_INTERPOLATE_SHIFT; \
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const int c4 = (m4 * m2) >> VIPS_INTERPOLATE_SHIFT; \
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\
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/* var points to \
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* p1 (x_int, y_int) \
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* p2 (x_int+1, y_int) \
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* p3 (x_int, y_int+1) \
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* p4 (x_int+1, y_int+1) \
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*/ \
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const TYPE *tp1 = (TYPE *) p1; \
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const TYPE *tp2 = (TYPE *) p2; \
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const TYPE *tp3 = (TYPE *) p3; \
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const TYPE *tp4 = (TYPE *) p4; \
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\
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/* Interpolate each band. \
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*/ \
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for( z = 0; z < b; z++ ) \
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tq[z] = (c1 * tp1[z] + c2 * tp2[z] + \
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c3 * tp3[z] + c4 * tp4[z]) >> VIPS_INTERPOLATE_SHIFT; \
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}
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/* Interpolate a pel ... int32 and float types.
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*/
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#define BILINEAR_FLOAT( TYPE ) { \
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TYPE *tq = (TYPE *) q; \
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\
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const double m1 = class->matrix_double[xi][0]; \
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const double m2 = class->matrix_double[xi][1]; \
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const double m3 = class->matrix_double[yi][0]; \
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const double m4 = class->matrix_double[yi][1]; \
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\
|
||||
const double c1 = m3 * m1; \
|
||||
const double c2 = m3 * m2; \
|
||||
const double c3 = m4 * m1; \
|
||||
const double c4 = m4 * m2; \
|
||||
\
|
||||
/* var points to \
|
||||
* p1 (x_int, y_int) \
|
||||
* p2 (x_int+1, y_int) \
|
||||
* p3 (x_int, y_int+1) \
|
||||
* p4 (x_int+1, y_int+1) \
|
||||
*/ \
|
||||
const TYPE *tp1 = (TYPE *) p1; \
|
||||
const TYPE *tp2 = (TYPE *) p2; \
|
||||
const TYPE *tp3 = (TYPE *) p3; \
|
||||
const TYPE *tp4 = (TYPE *) p4; \
|
||||
\
|
||||
/* Interpolate each band. \
|
||||
*/ \
|
||||
for( z = 0; z < b; z++ ) \
|
||||
tq[z] = c1 * tp1[z] + c2 * tp2[z] + \
|
||||
c3 * tp3[z] + c4 * tp4[z]; \
|
||||
}
|
||||
|
||||
/* Interpolate a pel ... don't use the pre-calcuated matricies.
|
||||
*/
|
||||
#define BILINEAR_SLOW( TYPE ) { \
|
||||
TYPE *tq = (TYPE *) q; \
|
||||
\
|
||||
/* var points to \
|
||||
* p1 (x_int, y_int) \
|
||||
* p2 (x_int+1, y_int) \
|
||||
* p3 (x_int, y_int+1) \
|
||||
* p4 (x_int+1, y_int+1) \
|
||||
*/ \
|
||||
const TYPE *tp1 = (TYPE *) p1; \
|
||||
const TYPE *tp2 = (TYPE *) p2; \
|
||||
const TYPE *tp3 = (TYPE *) p3; \
|
||||
const TYPE *tp4 = (TYPE *) p4; \
|
||||
\
|
||||
/* Interpolate each band. \
|
||||
*/ \
|
||||
for( z = 0; z < b; z++ ) \
|
||||
tq[z] = c1 * tp1[z] + c2 * tp2[z] + \
|
||||
c3 * tp3[z] + c4 * tp4[z]; \
|
||||
}
|
||||
|
||||
/* Expand for band types. with a fixed-point interpolator and a float
|
||||
* interpolator.
|
||||
*/
|
||||
#define SWITCH_INTERPOLATE( FMT, INT, FLOAT ) { \
|
||||
switch( (FMT) ) { \
|
||||
case IM_BANDFMT_UCHAR: INT( unsigned char ); break; \
|
||||
case IM_BANDFMT_CHAR: INT( char ); break; \
|
||||
case IM_BANDFMT_USHORT: INT( unsigned short ); break; \
|
||||
case IM_BANDFMT_SHORT: INT( short ); break; \
|
||||
case IM_BANDFMT_UINT: FLOAT( unsigned int ); break; \
|
||||
case IM_BANDFMT_INT: FLOAT( int ); break; \
|
||||
case IM_BANDFMT_FLOAT: FLOAT( float ); break; \
|
||||
case IM_BANDFMT_DOUBLE: FLOAT( double ); break; \
|
||||
default: \
|
||||
g_assert( FALSE ); \
|
||||
} \
|
||||
}
|
||||
|
||||
static void
|
||||
vips_interpolate_bilinear_interpolate( VipsInterpolate *interpolate,
|
||||
REGION *out, REGION *in,
|
||||
int out_x, int out_y, double in_x, double in_y )
|
||||
{
|
||||
VipsInterpolateBilinear *bilinear =
|
||||
VIPS_INTERPOLATE_BILINEAR( interpolate );
|
||||
VipsInterpolateBilinearClass *class =
|
||||
VIPS_INTERPOLATE_BILINEAR_GET_CLASS( interpolate );
|
||||
|
||||
/* Pel size and line size.
|
||||
*/
|
||||
const int ps = IM_IMAGE_SIZEOF_PEL( in->im );
|
||||
const int ls = IM_REGION_LSKIP( in );
|
||||
const int b = in->im->Bands;
|
||||
int z;
|
||||
|
||||
PEL *q = (PEL *) IM_REGION_ADDR( out, out_x, out_y );
|
||||
|
||||
if( bilinear->slow ) {
|
||||
/* Subtract 0.5 to centre the bilinear.
|
||||
*/
|
||||
const double cx = in_x - 0.5;
|
||||
const double cy = in_y - 0.5;
|
||||
|
||||
/* Top left corner we interpolate from.
|
||||
*/
|
||||
const int xi = FLOOR( cx );
|
||||
const int yi = FLOOR( cy );
|
||||
|
||||
/* Fractional part.
|
||||
*/
|
||||
const double X = cx - xi;
|
||||
const double Y = cy - yi;
|
||||
|
||||
/* Residual.
|
||||
*/
|
||||
const double Xd = 1.0 - X;
|
||||
const double Yd = 1.0 - Y;
|
||||
|
||||
/* Weights.
|
||||
*/
|
||||
const double c1 = Xd * Yd;
|
||||
const double c2 = X * Yd;
|
||||
const double c3 = X * Y;
|
||||
const double c4 = Xd * Y;
|
||||
|
||||
/* var points to
|
||||
* p1 (x_int, y_int)
|
||||
* p2 (x_int+1, y_int)
|
||||
* p3 (x_int, y_int+1)
|
||||
* p4 (x_int+1, y_int+1)
|
||||
*/
|
||||
const PEL *p1 = (PEL *) IM_REGION_ADDR( in, xi, yi );
|
||||
const PEL *p2 = p1 + ps;
|
||||
const PEL *p3 = p1 + ls;
|
||||
const PEL *p4 = p1 + ls + ps;
|
||||
|
||||
SWITCH_INTERPOLATE( in->im->BandFmt,
|
||||
BILINEAR_SLOW, BILINEAR_SLOW );
|
||||
}
|
||||
else {
|
||||
/* Subtract 0.5 to centre the bilinear.
|
||||
*/
|
||||
const double cx = in_x - 0.5;
|
||||
const double cy = in_y - 0.5;
|
||||
|
||||
/* Now go to scaled int.
|
||||
*/
|
||||
const double sx = cx * VIPS_TRANSFORM_SCALE;
|
||||
const double sy = cy * VIPS_TRANSFORM_SCALE;
|
||||
const int sxi = FLOOR( sx );
|
||||
const int syi = FLOOR( sy );
|
||||
|
||||
/* Get index into interpolation table and unscaled integer
|
||||
* position.
|
||||
*/
|
||||
const int xi = sxi & (VIPS_TRANSFORM_SCALE - 1);
|
||||
const int yi = syi & (VIPS_TRANSFORM_SCALE - 1);
|
||||
const int in_x_int = sxi >> VIPS_TRANSFORM_SHIFT;
|
||||
const int in_y_int = syi >> VIPS_TRANSFORM_SHIFT;
|
||||
|
||||
/* var points to
|
||||
* p1 (x_int, y_int)
|
||||
* p2 (x_int+1, y_int)
|
||||
* p3 (x_int, y_int+1)
|
||||
* p4 (x_int+1, y_int+1)
|
||||
*/
|
||||
const PEL *p1 = (PEL *)
|
||||
IM_REGION_ADDR( in, in_x_int, in_y_int );
|
||||
const PEL *p2 = p1 + ps;
|
||||
const PEL *p3 = p1 + ls;
|
||||
const PEL *p4 = p1 + ls + ps;
|
||||
|
||||
SWITCH_INTERPOLATE( in->im->BandFmt,
|
||||
BILINEAR_INT, BILINEAR_FLOAT );
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
vips_interpolate_bilinear_class_init( VipsInterpolateBilinearClass *class )
|
||||
{
|
||||
#ifdef DEBUG
|
||||
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
|
||||
#endif /*DEBUG*/
|
||||
VipsInterpolateClass *interpolate_class =
|
||||
(VipsInterpolateClass *) class;
|
||||
int x;
|
||||
|
||||
vips_interpolate_bilinear_parent_class =
|
||||
g_type_class_peek_parent( class );
|
||||
|
||||
#ifdef DEBUG
|
||||
gobject_class->finalize = vips_interpolate_bilinear_finalize;
|
||||
#endif /*DEBUG*/
|
||||
interpolate_class->interpolate = vips_interpolate_bilinear_interpolate;
|
||||
interpolate_class->window_size = 2;
|
||||
|
||||
/* Calculate the interpolation matricies.
|
||||
*/
|
||||
for( x = 0; x < VIPS_TRANSFORM_SCALE + 1; x++ ) {
|
||||
const double c1 = (double) x / VIPS_TRANSFORM_SCALE;
|
||||
const double c2 = 1.0 - c1;
|
||||
|
||||
class->matrix_double[x][0] = c1;
|
||||
class->matrix_double[x][1] = c2;
|
||||
|
||||
class->matrix_int[x][0] = c1 * VIPS_INTERPOLATE_SCALE;
|
||||
class->matrix_int[x][1] = c2 * VIPS_INTERPOLATE_SCALE;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
vips_interpolate_bilinear_init( VipsInterpolateBilinear *bilinear )
|
||||
{
|
||||
#ifdef DEBUG
|
||||
printf( "vips_interpolate_bilinear_init: " );
|
||||
vips_object_print( VIPS_OBJECT( bilinear ) );
|
||||
#endif /*DEBUG*/
|
||||
|
||||
bilinear->slow = FALSE;
|
||||
}
|
||||
|
||||
GType
|
||||
vips_interpolate_bilinear_get_type( void )
|
||||
{
|
||||
static GType type = 0;
|
||||
|
||||
if( !type ) {
|
||||
static const GTypeInfo info = {
|
||||
sizeof( VipsObjectClass ),
|
||||
NULL, /* base_init */
|
||||
NULL, /* base_finalize */
|
||||
(GClassInitFunc) vips_interpolate_bilinear_class_init,
|
||||
NULL, /* class_finalize */
|
||||
NULL, /* class_data */
|
||||
sizeof( VipsObject ),
|
||||
32, /* n_preallocs */
|
||||
(GInstanceInitFunc) vips_interpolate_bilinear_init,
|
||||
};
|
||||
|
||||
type = g_type_register_static( VIPS_TYPE_INTERPOLATE,
|
||||
"VipsInterpolateBilinear", &info, 0 );
|
||||
}
|
||||
|
||||
return( type );
|
||||
}
|
||||
|
||||
void
|
||||
vips_interpolate_bilinear_set_slow( VipsInterpolateBilinear *bilinear,
|
||||
gboolean slow )
|
||||
{
|
||||
bilinear->slow = slow;
|
||||
}
|
||||
|
||||
VipsInterpolateBilinear *
|
||||
vips_interpolate_bilinear_new( void )
|
||||
{
|
||||
return( g_object_new( VIPS_TYPE_INTERPOLATE_BILINEAR, NULL ) );
|
||||
}
|
||||
|
||||
|
||||
/* Convenience: return a static bilinear you don't need to free.
|
||||
*/
|
||||
VipsInterpolate *
|
||||
vips_interpolate_bilinear_static( void )
|
||||
{
|
||||
static VipsInterpolate *interpolate = NULL;
|
||||
|
||||
if( !interpolate )
|
||||
interpolate =
|
||||
VIPS_INTERPOLATE( vips_interpolate_bilinear_new() );
|
||||
|
||||
return( interpolate );
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user